Home / 850,439.80-1,275,659.70-495,854.20

Finding the Fourth Proportional to 850,439.80, 1,275,659.70 and 495,854.20

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Solution

The fourth proportional to 850,439.80, 1,275,659.70 and 495,854.20 is: 743,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,439.80 : 1,275,659.70 = 495,854.20 : x
  2. Step 2: Convert to fraction form
    850,439.80/1,275,659.70 = 495,854.20/x
  3. Step 3: Cross multiply
    850,439.80x = 1,275,659.70 × 495,854.20
  4. Step 4: Simplify right side
    850,439.80x = 632,541,220,015.74
  5. Step 5: Solve for x
    x = 632,541,220,015.74/850,439.80
  6. Step 6: Final answer
    x = 743,781.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.